In accordance with the requirements of citation databases, proper citation of publications appearing in our Quarterly should include the full name of the journal in Polish and English without Polish diacritical marks, i.e. "Eksploatacja i Niezawodnosc – Maintenance and Reliability".

przekładnia zębata

Fatigue testing of transmission gear

This paper presents the results of experimental tests of fatigue life of selected gears, performed on a test stand equipped with a hydraulic universal testing machine. The tests were performed on skew and straight cylindrical gears, made of EN AW-2017A and EN AW-7057 aluminium, and 40HM steel. Moreover, fatigue life curves for selected gears were presented, and the mechanisms of the occurrence of damage were analysed. Relationships describing the maximum value of torque during a loading cycle in relation to the number loading of cycles until the gear is damaged were also proposed.

Analysis of the possibility to reduce vibroactivity of the gearbox housing

The article presents the results of simulation tests, the aim of which is to reduce the noise emission of the gearbox during operation by appropriate selection of the housing ribbing. The effect was analyzed of the position and shape of additional ribs on changes of the forms of vibration of the upper housing plate and on its vibroactivity. On the basis of the conducted simulations using FEM, such a shape of the additional ribbing has been determined whose dimensions ensure a reduction of the vibroactivity of the housing and, at the same time, a reduction of nuisance to the environment, with a minor increase in the gearbox weight.